NEW YORK - It turns out Joss Whedon may owe Gareth Evans a thank you note.  Over the past six months, the director of the upcoming "Avengers: Age of Ultron" cast Elizabeth Olsen and Aaron Taylor-Johnson as legendary comic book characters the Scarlet Witch and Quicksilver. The sequel to the 2012 blockbuster is in production now, but Olsen and Taylor-Johnson already spent months getting to know each other intimately as a young couple in Evans' reboot of "Godzilla."  The duo spoke to HitFix on Wednesday and acknowledged how their experience on the new monster movie is informing their work as Wanda and Pietro Maximoff.

"We felt like brother and sister making ['Godzilla']," Olsen says.  "You end up becoming really comfortable and you get to know each other and it's a playful work relationship. You feel like brother and sister so when you get to work with each other again you've already established that familiarity and then you don't have to do those beginning steps again."

Taylor-Johnson, who previously played a costumed hero in two "Kick-Ass" flicks says Olsen is fantastic in "Godzilla" and "it made it more important that the next film we do really had to come away from the look we had in this."

Olsen admits jumping into the Marvel Universe has been "intimidating," but credits Whedon for making her feel like she has a major hand in shaping the on screen vision of the reality bending sorceress.

"He inherited all these characters and gets to work with us on developing ours and that is a fun process," Olsen says. " I don't come in knowing what I've already created, but I get to come in knowing we are going to build a new character that hasn't been created yet."

For more on Olsen and Taylor-Johnson's thoughts on both "Avengers: Age of Ultron" and "Godzilla" watch the video embedded at the top of this post.

"Godzilla" opens nationwide on May 16.  "Avengers: Age of Ultron" is currently filming and opens nationwide on May 1, 2015.